It's even worse, the censored sections are added as annotations on top of the PDF, not an actual part of the document, so: * The name of the person who inserte

It's even worse, the censored sections are added as annotations on top of the PDF, not an actual part of the document, so: * The name of the person who inserted them is rendered when clicking on the black boxes. * Even basic PDF readers will allow modifying and deleting the boxes, you don't even need Acrobat or another PDF editor.